Door lock



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ATTORNEYS.

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ATTORNEYS Patented Oct. 20, 1942 UNITED STATES DOOR LOCK Emory Glenn Simpson, to -Ternstedt Manufac Detroit, Mich., assigner turing Company, Detroit,

Mich., a corporation of Michigan Original application June 3, 1939, Serial No.

277,224. ber 20,

3' Claims.

This invention relates to a door lock and more particularly to an automobile door lock. This application is a division of application Serial No. 277,224, nled June 3, 1939.

The automobile door locks at p resent in use consist of two types. fied by the door lock shown in the Andersen- Bowlus Patent 2,039,873 wherein when the door` is locked, the outside handle and rollback are disconnected from the latch bolt so that the handle semi-free wheels and is ineffective to retract the bolt. In the other type of door lock now in use, the door is locked by clogging the outside rollback so that the outside handle cannot be turned. This type of lock is exemplified by the Surprenant Patent 1,771,737.

Both of these locks can be unlocked by inserting a wire into the window well between the window glass and the reveal. By means of such wire the shiftable retractor in the rst type of lock and the dogging pawl in the other type of lock can be thrown to released position, that is, in the iirst type of lock the outside door handle is again connected with the bolt so that turning of the outside handle retracts the bolt and in the second type of lock the pawl is disengaged from the outside rollback so that the outside handle can turn to retract the bolt.

It is an object of this invention to overcome this defect presentl in automobile door locks. This object has been achieved by reversing the lock frame or plate so that the working parts of the lock are mounted between the frame and the inside door panel. With this arrangement the latch frame not only supports the working parts of the lock but also serves as acover plate making the operative parts of thelock inaccessible to a wire inserted into the window well as above described.

Not infrequently accidents have happened by a passenger accidentally striking the remote or inside dor handle, or by unauthorized manipulation of the inside door handle by children, so that the door nies open and the passenger or child falls out of the car. It is old in the art to remedy this defect by connecting the inside door handle to the shiftable retractor in the lock of the Andersen-Bowlus patent so that it optionally can be disconnected from the bolt and thus made ineective to retract the' bolt. Many car owners do not like this arrangement. Therefore the motor car manufacturer is faced with the problem of manufacturing two types of locks, the one in which the remote or inside door handle is always effective to retract the bolt and the other in which the inside handle can be optionally disconnected from the bolt.

It is the object of this invention to produce a single type of lock which at the option of the car owner can be arranged so that the remote or inside handle is always eiiective to retract the Divided and this application Septem- 1940, Serial No. 357,522

The first type is exempli- 24 and the outside tract the bolt. This principle is shown in the I2 xed to the latch plate by the clip bolt or the same lock can be arranged so that the remote handle optionally can be disconnected from the bolt so that it is ineffective to retract the bolt.

In the drawings:

Fig. 1 is an elevation of the unhinged or free end of the door partly broken away to show the mounting of the lock within the door.

Fig. 2 is a detailed elevation of the lock. v

Figs. 3, 4, 5, 6, 7, and 8 are sections lines 3-3, 4 4, 5 5, 6-6, 1 1 and Fig. 2. l

Fig. .9 is a detail view of the lock and inside remote handle arranged so. that optionally the inside handle can be disconnected from the bolt.

Fig. 10 is a section along the line III-7H) ol Fig. 9.

Fig. 1l is a fragmentary detail of the remote handle draft link.

Referring more particularly to the drawings there is shown a door` having a window well I bounded on the inside by metal door panel 2 and on the outsideby door panel 3. The window glass is designated 4.

The lock comprisesa back plate 5 having a selvage plate 6 and a latch bolt 1. The head 8 of the bolt projects through and is slidably guided in the aligned openings 9 in the selvage plate and door pillar. The tail of the bolt is supported on the plate 5 by rivet I0 which slidably engages the tail of the bolt in slot II. The bolt is yieldably projected by the torsion spring The outside door handle I4 is provided with a spindle I5, the inner end of which is iixed in the opening Iii of the outside rollback Il. The outside rollback acts through lever I8` and shiftable retractor I9 to retract the bolt. Lever I8 is pivotally supported by pin 20 which is fixed to the latch plate. A torsion spring 2l tends to rotate the lever I8 clockwise, Fig. 2, and hold the rollback I'l against the stop lug 22 struck out of the latch plate 5. The shitable retractor I9 is pivotally secured to the lower end of lever I8 by pin 23 (Figs. 2 and l0). When the retractor I9 is in the position shown in Fig. 2, clockwise rotation of the outside rollback I1 rotates lever I8 counterclockwise thereby moving retractor` the right. In moving to the right retractor I9 engages an abutment in the form of a lug 24 on the tail oi the bolt, thereby retracting the bolt. The lever I9 can be swung downwardly to the position shown in Fig. 9 which disconnects the outside rollback from the bolt. In this position when the outside rollback is turned the retractor I9 travels by and does not engage the abutment handle I4 is ineiective to re- Andersen-Bowlus Patent 2,039,873.

The retractor I9 can be shifted from the position shown in Fig. 2 to the position shown in along the draft link 42.

Fig. 9 or vice versa by the pate 25 which is pivotally vconnected at its upper end to one arm of v the bell crank lever 26. 'Ihe bell crank lever 26 is pivoted on the latch plate by pin 2l. The other arm of the bell crank is pivotally connected to the push and pull rod 28 by means of which the bell crank can be swung to raise or lower plate 25. Plate 25 is provided with lugs 29 and 30 which contact the top and bottom edges of retractor I9. Thus when the plate 25 is slid downwardly, retractor I9 is disengaged from abutment 24 and is ineffective to retract the bolt. When-plate 25 is slid upwardly from the position shown in Fig. 9, the retractor I9 is returned to the position shown in Fig. 2,'Where, by engagement with abutment 24, it is effective to retract the bolt.

It will be noted particularly by reference to Figs. 2 and 3 that all of the above described parts ofthe lock which are supported on the frame are positioned between the frame 5 and the inside door panel 2 when the lock is secured in the v window well. It should be further noted that the selvage plate 6 contacts the inside face of the inside door panel 2 and serves to space the lock frame 5 from the inside door panel. Further. the lock bolt is mounted on the frame 5 so that the curved face of the bolt head 8 faces away from the latch plate 5 rather than toward it as in the locks heretofore and presently used.

I'he lock ls secured in the window well by bolts 3l which pass through the door pillar and are screwed into tapped openings in the selvage plateV and by bolts 32 which turn into brackets provided therefor on the inside door panel 2. The lock plate is also provided along its top and bottom edges with horizontal flanges 33 and 34 which, like the plate 5, serve as shields to prevent access from above or below to the working parts of the lock mounted on the plate 5.

Fig. inicely illustrates the thief-proof feature of the lock. By wayy of example, a wire 35 is shown projected into the window well I through the space between the glass 4 and the outside reveal 36. Due to the shielding action of the lock plate 5, the wire cannot be engaged with the shiftable retractor I9. 'I'hus the Wire 35 is in, eiective to shift the retractor I 9 from locked position, Fig. 9, to bolt retracting position, Fig. 2.

The lock is provided with an inside door handle 31 of the remote type. 'Ihe handle 31 is fixed to a spindle 40 Vwhich is journalled in a support plate 38. The lever 39 is fixed to the spindle 48 and pivotally connected as at 4I with the remote As shown in Fig. 9 the handle 3l is in normal or non-bolt retracting position. A headed pin 43 is riveted to the bolt. Pin 43 is provided with an enlarged head 44 identical with the enlarged head 45 on pin 23. Pins 23 and 43 are equidistant from pivot 4I when the handle is in normal position, shown in Fig. 9. 'I'he end of the draft link 42 remote from pin 4I is provided with a' slot 46 just suiiciently larger than the periphery of heads-44 and 45 (which are of equal size) so that heads 44 and 45 can be passed through theopening 4B and either pin 23 or 43 interengaged with link 42. The slot 46 in link 42 is positioned so that it will be offset from the heads 44 and 45 when the link 42 is nterengaged with either one or the other of pins 23 or 43 to prevent disengagement of the two members.

In view of the above it will be noted that a single draft link 42 can be optionally connected either to pin 23 or pin 43. When connected to pin 23, which, as above described is the pin which pivotally connects retractor I9 to'lever I8, it is obvious when the retractor I9 is swung to the position shown in Fig. 9 that the remote handle 31 is disconnected from the bolt I and ineective to retract the same. Turning of the remote handle 3'I will merely cause the shiftable retractor I9 to pass by and not engage abutment 24. When draft link 42 is optionally connected with pin 43,

then the remote handle 31 is connected to the l bolt and turning of the remote handle 3l will retract the lock bolt.

In view ofthe above the manufacturer need make but one complete standard lock assembly including the lock, remote handle and draft link of standard size. Depending on the choice of the purchaser of the car the link 42 can be connected directly to the bolt through pin 43 if the purchaser desires the remote handle to always retract the bolt. If the purchaser desires for safety reasons optionally to make the remote handle ineiective to retract the bolt, then the link 42 is connected to pin 23. In the latter case whenever the retractor is fixed so that it is disengaged from abutment 24, then the remote handle is ineective to retract the bolt.

I claim: 1. A door lock having a retractable latch bolt,

, a shiftable retractor shiftable into one position where the retractor is effective to retract the bolt and shiftable into another position where the retractor is ineffective to retract the bolt, a

handle movable into and out of its normal position, a connection on the said shiftable retractor, a connection on the said bolt, a draft link pivotally connected to the said handle, the connections on the said retractor and bolt being equidistant from the pivotal connection between the draft link and the handle when the handle is in normal position, and means on the end of the draft link interengageable optionally and independently with one or the other of said connections whereby the handle is optionally connectlable by the same draft link directly to the bolt independently of said retractor or directly to the said retractor.

2. A door lock having a retractable latch bolt, a shiftable retractor shiftable into one vposition where the retractor is effective to retract the bolt and shiftable into another position where the retractor is ineffective to retract the bolt, a lug on said bolt, a lug on said retractor, a draft link having a socket for engagement either with the lug on the retractor or the lug on the latch bolt whereby when the link is connected to the bolt the draft link can retract the bolt without moving the retractor.

3. In a door lock having a lock plate, a vretractable bolt mounted on the lock plate, outside retracting means including a shiftable retractor shiftable in one position to connect the outside retracting means with the bolt and shiftable in another position torender the outside retractor ineffective to retract the bolt, an inside door handle, a connection i'lxed on the retractor, a second connection xed on the bolt, a draft link connected at one end to the inside door handle and means on the other end of the draft link optionally and independently interengageable with either the first or second connection whereby when the draft link is connected to the second connection the latch bolt can be retracted with-- tive to retract the bolt.

EMORY GLENN SIMPSON. 

